[ Grammar ]
Mastering a foreign language ____________ a lot of time, effort, and practice.
A. requiring
B. to require
C. require
D. requires
Select your answer:

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Grammar › View. Who _____ you that strange story?
A. did tell
B. told
C. did you tell
Grammar › View
Choose the correct spelling below.
A. mistreate
B. mistreat
C. misstreat
